Abstract: A method for induction heating and quench hardening of helical gears provides a hardness pattern uniformly distributed to a controlled depth across and between the teeth surfaces by means of axial scanning of the workpiece and uniform quenching. Uniform quenching is achieved by directing jets of quench fluid at the workpiece toothed surface at angles horizontally offset from the radial direction.

Abstract: Aluminum-base alloys containing Cu, Li, Zn, Mg and Ag are disclosed which possess highly desirable properties, such as relatively low density, high modulus, high strength/ductility combinations, strong natural aging response with and without prior cold work, and high artificially aged strength with and without prior cold work. In addition, the alloys possess good weldability, corrosion resistance, cryogenic properties, and elevated temperature properties. The alloys may comprise from about 1 to about 7 weight percent Cu, from about 0.1 to about 4 weight percent Li, from about 0.01 to about 4 weight percent Zn, from about 0.05 to about 3 weight percent Mg, from about 0.01 to about 2 weight percent Ag, from about 0.01 to about 2 weight percent grain refiner selected from Zr, Cr, Mn, Ti, Hf, V, Nb, B and TiB.sub.2, and the balance Al along with incidental impurities. Preferred alloys comprise from about 3.0-6.5 weight percent Cu, from about 0.5-2.6 weight percent Li, from about 0.

Abstract: An aluminum-silicon alloy having excellent mechanical characteristics is formed by pressure casting of a molten material concurrently with modifying thereof by a flux which includes at least one element selected from the group of Na, Sb, Sr, and/or Ca, allowing a substantially fine grain of silicon to be dispersed in the alloy. Alternatively, the step of the pressure casting is replacable by substantial uniform cooling of the molten material regardless of a thickness thereof by cooling a die having a mold formed of a Cu-W type material, which mold corresponds to a substantially thick portion of the alloy.

Abstract: A high-strength, damage-resistant rail characterized by essentially consists of 0.60 to 0.85 wt. % of C, 0.1 to 1.0 wt. % of Si, 0.5 to 1.5 wt. % of Mn, not more than 0.035 wt. % of P, not more than 0.040 wt. % of S, and not more than 0.05 wt. % of Al, a balance being Fe and indispensable impurity. The rail comprises corner and head side portions having a Brinell hardness H.sub.B of 341 to 405 and a head top portion having a hardness which is not more than 0.9 of the Brinell hardness of the corner and head side portions.

Abstract: Nickel base superalloys which contain niobium (columbium) to promote gamma double prime strengthening are improved by replacing the niobium with tantalum on an atom-for-atom basis and then heat treating the new alloy at temperatures in excess of those conventionally used for superalloys which include niobium. The resultant tantalum-bearing alloys are found to exhibit increased strength and greater phase stability than corresponding niobium-bearing alloys.

Abstract: The present invention relates to novel materials based on silver and tin oxide for the production of electrical contacts as well as the electrical contacts thus produced. According to the invention, these materials contain at least 6% by weight of tin oxide and from 0.02 to 5% by weight of tellurium oxide; the total content by weight of metal oxides, with the exclusion of tellurium oxide, does not exceed 15%, the balance being made up by silver. Application: manufacture of electrical equipment.

Abstract: Electric and electronic parts, including leadframes made of a copper-based alloy having high strength and high electric conductivity said copper-based alloy is produced by a process which comprises the steps of preparing a copper-based alloy consisting essentially of 0.01-3.0 wt % Co and 0.01-0.5 wt % P with the balance being Cu and incidental impurities, quenching said alloy from a temperature not lower than 750.degree. C. down to 450.degree. C. and below at a cooling rate of at least 1.degree. C./sec, heat treating the quenched alloy at a temperature of 480.degree.-600.degree. C. for 30-600 minutes, cold working said alloy for a working ratio of 20-80%, further heat treating the alloy at a temperature of 440.degree.-470.degree. C. for 30-600 minutes, and subsequently performing cold working for a working ratio of at least 50% and heat treatment at 380.degree. C. and below. The electric and electronic parts preferably contain a plurality of conductive leads.

Abstract: An Ni base alloy for use in spark plug electrodes for internal combustion engines which consists essentially of, on a weight percent basis,0.1 to 1.5% Si,0.1 to 0.65% Mn,3.1 to 5% Al,0 to 2% Cr,0 to 0.5% of one or more elements selected from the group consisting of Y and rare earth elements,0 to 5% Co,0 to 0.5% of Hf and/or Re, andthe remainder Ni and incidental impurities.

Abstract: A silicone resin fine powder containing a quaternary ammonium group-containing organofunctional group and having excellent physiological activity, hydrophilicity and polarity, which comprises units represented by RSiO.sub.3/2 wherein R represents a substituted or unsubstituted monovalent hydrocarbon group, and additionally at least one of units represented by SiO.sub.2 and units represented by RSiO wherein R is the same as defined above.

Abstract: This invention provides alloys having optimum high and low temperature mechanical properties for use of both the high and low pressure ends of turbine rotors in a single row power generation turbine with a service temperature profile from about 75.degree.-1200.degree. F. (24.degree.-649.degree. C.). The alloys include about 8.00-9.5 wt. % Cr and about 0.85-1.05 wt. % Mo and are heat treated at 1225.degree.-1350.degree. F. (663.degree.-732.degree. C.) for at least about one hour. The alloys and the components manufactured from these alloys preferably include a room temperature 0.2% yield strength of about 80-110 ksi (551-758 MPa).

Abstract: A method for ion implantation of relatively high concentrations of alloying elements into a metal target without sputtering the target, in which the target is precoated with a layer of preselected thickness of a light, low sputtering yield element such as carbon, which is ablated during the ion implantation process.

Abstract: An aluminum based alloy useful in aircraft and aerospace structures which has low density, high strength and high fracture toughness consists essentially of the following formula:Cu.sub.a Li.sub.b Mg.sub.c Ag.sub.d Zr.sub.e Al.sub.balwherein a, b, c, d, e and bal indicate the amount in wt. % of alloying components, and wherein 2.4<a<3.5, 1.35<b<1.8, 0.25<c<0.65, 0.25<d<0.65 and 0.08<e<0.25, and the alloy has a density of 0.0945 to 0.0960 lbs/in.sup.3. Preferably, the relationship between the copper and lithium components also meets the following tests:more preferably the relationship meets the following tests:6.5<a+2.5b<7.5, 2b-0.8<a<3.75b-1.9.

Abstract: A method of improving strength in aluminum alloys. The method involves solution heat treating an aluminum alloy product, quenching the alloy product, warm working the alloy product without a pre-aging step, and aging the alloy product at 250.degree.-400.degree. F. (121.degree.-204.degree. C.). The method may be used on forgings, to impart T8-type hardness to alloys that previously could only obtain such hardness levels in non-forging applications, such as by using stretch/cold working techniques.

Abstract: Disclosed are electro-plated steel sheets having a primer coating composed of 5 to 30% by weight of Cr, 0.005 to 5% by weight of cation polymer, with the balance being Zn, with or without a further Zn or Zn-alloy coating formed on the primer coating. The primer coating may contain fine particles of oxides and/or iron-group metals, and may further be applied with a chromate film and/or an organic coating. Also disclosed is the process for producing an electro-plated steel sheet having excellent corrosion resistance and surface brightness, comprising performing electro-plating in an acidic Zn plating bath containing Cr ions and cation polymer, with the ratio of Cr.sup.6+ ions/Cr.sup.3+ ions being not more than 0.1.

Abstract: An improved method of making a lithoplate from a 5XXX type alloy which includes controlling the composition and casting practices to eliminate forming a pine tree metal structure in an ingot used for rolling a workpiece to be made into lithoplate. The method also includes homogenizing and hot rolling the ingot at a controlled initial temperature to produce a desired grain and metal microstructure in the sheet rolled from the ingot which is suited for providing a surface having substantially uniform and evenly distributed craters produced by an electrochemical method of graining.

Abstract: A flat spring hose clamp having an improved resistance to brittle fracture and a method for manufacturing the same are disclosed, the hose clamp being made of a steel having a steel composition consisting essentially of, by weight %:C:0.30-0.70%,Si: 0.70% or less,Mn: 0.05-1.00%,P: 0.030% or less,S: 0.020% or less,Cr: 0.50-2.00%,Mo: 0.10-0.50%,Nb: 0.005-0.100%,sol. Al: 0.10% or less,N: more than 0.0020%, but not more than 0.015%,Ti: 0-0.10% and/or B: 0-0.0020%,and a balance of Fe and incidental impurities, and the steel possessing a uniform bainite structure.

Abstract: A method of making extrafine pure elemental metal powder from a highly malleable pure elemental metal powder. The pure elemental metal powder is oxidized, ground to a desired average particle size, reduced in a reducing atmosphere to a pure elemental metal powder, and then sieved to obtain the desired fraction of extrafine pure elemental metal powder.

Abstract: A novel corrosion inhibiting iron-free filler metal braze composition which has a nominal composition of: from about 5.0% to about 9.0% chromium; from about 3.5% to about 5.5% silicon; from about 2.0% to about 4.0% boron; from about 1.0% to about 6.0% copper; from about 1.0% to about 6.0% molybdenum; from about 1.0% to about 6.0% niobium, tantalum or mixtures thereof and the balance nickel.

Abstract: An erosion and corrosion resistant coating is formed of a plurality of alternating layers of metallic and ceramic materials. The two materials selected for the layers have complementary wear resistant characteristics, such that one is relatively ductile and the other is relatively brittle. The concentration of the two materials at the interface between adjacent layers is graded to improve the adhesion of the layers and to provide a more unified coating. Preferably radio-frequency sputtering is employed to deposit the coating, since it does not produce excessive heating which could negate any prior heat treatment of the substrate onto which the coating is deposited.

Abstract: High modulus aluminum-base alloys comprise mechanically alloyed aluminum-base compositions contain 10-25% titanium part of which may be replaced by vanadium or zirconium. Within described limits the alloys can contain elements other than oxygen and carbon ordinarily derived from the process control agent used in mechanical alloying.